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Mon, 7 Jul 2025 18:32:22 +0000 Message-ID: <252667f3-47b2-4d1f-86d6-c34ba43a6d47@intel.com> Date: Mon, 7 Jul 2025 11:32:20 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [Intel-wired-lan] Increased memory usage on NUMA nodes with ICE driver after upgrade to 6.13.y (regression in commit 492a044508ad) From: Jacob Keller To: Jaroslav Pulchart CC: Maciej Fijalkowski , Jakub Kicinski , Przemek Kitszel , "intel-wired-lan@lists.osuosl.org" , "Damato, Joe" , "netdev@vger.kernel.org" , "Nguyen, Anthony L" , Michal Swiatkowski , "Czapnik, Lukasz" , "Dumazet, Eric" , "Zaki, Ahmed" , Martin Karsten , "Igor Raits" , Daniel Secik , "Zdenek Pesek" References: <20250625132545.1772c6ab@kernel.org> <08fae312-2e3e-4622-94ab-7960accc8008@intel.com> <366dbe9f-af4d-48ec-879e-1ac54cd5f3b6@intel.com> Content-Language: en-US Autocrypt: addr=jacob.e.keller@intel.com; keydata= xjMEaFx9ShYJKwYBBAHaRw8BAQdAE+TQsi9s60VNWijGeBIKU6hsXLwMt/JY9ni1wnsVd7nN J0phY29iIEtlbGxlciA8amFjb2IuZS5rZWxsZXJAaW50ZWwuY29tPsKTBBMWCgA7FiEEIEBU qdczkFYq7EMeapZdPm8PKOgFAmhcfUoCGwMFCwkIBwICIgIGFQoJCAsCBBYCAwECHgcCF4AA CgkQapZdPm8PKOiZAAEA4UV0uM2PhFAw+tlK81gP+fgRqBVYlhmMyroXadv0lH4BAIf4jLxI UPEL4+zzp4ekaw8IyFz+mRMUBaS2l+cpoBUBzjgEaFx9ShIKKwYBBAGXVQEFAQEHQF386lYe MPZBiQHGXwjbBWS5OMBems5rgajcBMKc4W4aAwEIB8J4BBgWCgAgFiEEIEBUqdczkFYq7EMe apZdPm8PKOgFAmhcfUoCGwwACgkQapZdPm8PKOjbUQD+MsPBANqBUiNt+7w0dC73R6UcQzbg cFx4Yvms6cJjeD4BAKf193xbq7W3T7r9BdfTw6HRFYDiHXgkyoc/2Q4/T+8H In-Reply-To: Content-Type: multipart/signed; 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boundary="------------YPgZHly41I1M5GdMMtn5VCdF"; protected-headers="v1" From: Jacob Keller To: Jaroslav Pulchart Cc: Maciej Fijalkowski , Jakub Kicinski , Przemek Kitszel , "intel-wired-lan@lists.osuosl.org" , "Damato, Joe" , "netdev@vger.kernel.org" , "Nguyen, Anthony L" , Michal Swiatkowski , "Czapnik, Lukasz" , "Dumazet, Eric" , "Zaki, Ahmed" , Martin Karsten , Igor Raits , Daniel Secik , Zdenek Pesek Message-ID: <252667f3-47b2-4d1f-86d6-c34ba43a6d47@intel.com> Subject: Re: [Intel-wired-lan] Increased memory usage on NUMA nodes with ICE driver after upgrade to 6.13.y (regression in commit 492a044508ad) References: <20250625132545.1772c6ab@kernel.org> <08fae312-2e3e-4622-94ab-7960accc8008@intel.com> <366dbe9f-af4d-48ec-879e-1ac54cd5f3b6@intel.com> In-Reply-To: --------------YPgZHly41I1M5GdMMtn5VCdF Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 7/3/2025 9:16 AM, Jacob Keller wrote: > On 7/2/2025 11:46 PM, Jaroslav Pulchart wrote: >>> think iperf doesn't do that, which might be part of whats causing thi= s >>> issue. I'm going to try to see if I can generate such fragmentation t= o >>> confirm. Is your MTU kept at the default ethernet size? >> >> Our MTU size is set to 9000 everywhere. >> >=20 > Ok. I am re-trying with MTU 9000 and using some traffic generated by wr= k > now. I do see much larger memory use (~2GB) when using MTU 9000, so tha= t > tracks with what your system shows. Currently its fluctuating between > 1.9 and 2G. I'll leave this going for a couple of days while on vacatio= n > and see if anything pops up. >=20 > Thanks, > Jake Good news! After several days of running a wrk and iperf3 workload with 9k MTU, I see a significant increase in the memory usage from the page allocations: 7.3G 953314 drivers/net/ethernet/intel/ice/ice_txrx.c:682 [ice] func:ice_alloc_mapped_page ~5GB extra. At least I can reproduce this now. Its unclear how long it took since I was out on vacation from Wednesday through until now. I do have a singular hypothesis regarding the way we're currently tracking the page count, (just based on differences between ice and i40e). I'm going to attempt to align with i40e and re-run the test. Hopefully I'll have some more information in a day or two. --------------YPgZHly41I1M5GdMMtn5VCdF-- --------------Ly3fQya1vHNcWFe9w860S9Zf Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQQgQFSp1zOQVirsQx5qll0+bw8o6AUCaGwStAUDAAAAAAAKCRBqll0+bw8o6EsV AQD4+A7411HQK5HcWvbuxKA48OpGKv9DcCazLQ2JnDBUewEAmNV0BgIf84WjgCGDyIdm2aMlmrCu dKJsqXKz9KGJgw8= =n1aw -----END PGP SIGNATURE----- --------------Ly3fQya1vHNcWFe9w860S9Zf--